Evolution of resistivity and permeability of wellbore cement after corrosion by supercritical CO2 in geological CO2 storage conditions

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-03-28 DOI:10.1016/j.conbuildmat.2025.141015

Yameng He , Lei Song , P.G. Ranjith , Mengyuan Huang , Yifan Sun , Zukun Wang , Linjun Wu

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引用次数: 0

Abstract

It is important to understand and monitor wellbore potential damage for the safety of the geological CO₂ storage project. The leaked CO₂ is susceptible to a chemical reaction with the alkaline cement that can damage the sealing effect of the wellbore structure. In this study, a test of cement corrosion by supercritical CO₂ was designed and the evolution of damaged cement resistivity and permeability were tested. The results of the study are as follows:(1) In the case of cement immersed in brine and placed in supercritical CO₂, its resistivity exhibited a linear decrease with corrosion time, whereas permeability increased linearly with corrosion time. These are the result of a gradual increase in the porosity of the cement corroded by CO₂. (2) In the case of cement that is directly exposed to supercritical CO₂, its resistivity exhibited a linear increase with corrosion time, whereas permeability decreased linearly with corrosion time. The gradual decrease in porosity of the cement, caused by the corrosion of CO₂, contributes to these alterations. (3) A chemical reaction process analysis reveals that the discrepancy between the two cement corrosion characteristics mentioned above lies in whether the carbonation product CaCO₃ can continue to be dissolved in the reaction system.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.